Printing telegraph apparatus



Mamh 15, 1933.. C W-BURCKY 2,111,387

PR INTING TELEGRAPH APPARATUS Filed Nov. 27, 1935 2 Sheets-Sheet l March 15, 15938. C; W BURCKY ZLSY PR INTING TELEGRAPH APPARATUS Filed Nov. 27, 1935 Y2 Sheets-Sheet 2 FIG. 3

INVENTOR CHARLES vv. Bumm Patented Mar. 15, 1938 UNITED STATES PRINTING TELEGRAPH APPARATUS Charles W. Burcky, Chicago, Ill., assignor to Teletype Corporation, Chicago, Ill., a corporation of Delaware Appiication November 27, 1935, Serial No. 51,813

22 Claims.

The present invention relates to printing telegraph apparatus and more particularly to such apparatus capable of tabulation recording.

It is the principal object of the invention to provide an efficient and smoothly operating tabulating device operable automatically at predetermined intervals for controlling tabulation recording.

Another object of the invention is to provide in a recording device, means operable under certain operating conditions for automatically prolonging the action of the spacing mechanism a predetermined amount.

A feature of the invention resides in prolonging the movement of the type carriage at predetermined intervals to insert automatically an extra character space without interrupting transmission or reception of character code signals.

The above and other objects of the present invention are accomplished by the provision in a printing telegraph apparatus, of the type disclosed in U. S. Patent No. 1,904,164, of a tabulator bar which extends across the front of the machine and is pivotally carried by brackets mounted in the typing unit and capable of swinging toward and away from the type carriage. The tabulator bar carries a number of adjustable members which determine the positions at which the type carriage is automatically spaced a plurality of character spaces during the time interval corresponding toa single character code signal. The spacing mechanism of the printing apparatus comprises a multi-toothed ratchet adapted to cooperate with a pair of pawls which are actuated by the printing bail to function as an escapement mechanism so that, upon each revolution of the main shaft, the spacing worm gear associated with the spacing ratchet is permitted under normal operating conditions to escape one tooth at a time and hence to rotate through a corresponding angle,

According to the aforementioned patent, a series of function levers is provided which operate in accordance with the setting of a series of selector vanes. Among this series of function levers, the present invention contemplates the provision of a tabulating function lever which, when permitted toy operate upon the coaction between the type carriage and one; of the adjustable members carried on the tabulator bar, is drawn forward toward the selector vanes under spring tension. When this occurs, the rear extension of the function lever rises and thereby lifts the rearwardly extending arm of a horizontal lever member, which is pivotally mounted beneath the function lever and has rearwardly and forwardly extending lever arms. When the rear end of this horizontal lever is raised, it lifts, through suitable linkage, the upper space pawl out of engagement with the tooth of the spacing ratchet, and simultaneously the front end of said horizontal member, having escaped a shoulder on a bar associated with the tabulator bar, is lowered and becomes latched by the tabulating bar to permit the insertion by the spacing mechanism of one or more additional character spaces. While the upper space pawl is thus disengaged, the lower space pawl returns to its normal position free of the teeth on the escapement ratchet, thus permitting the spacing worm gear to make approximately one'complete revolution instead of only a fraction of a revolution during the time that the main shaft rotates through one revolution, and therefore the carriage will be spaced continuously a distance, per revolution or" the main shaft, which is in excess of the normal spacing distance.

it is obvious that the spacing ratchet may be provided with any number of teeth, and hence the number of character spaces capable of being procured during a complete revolution of the spacing ratchet is governed by the number of teeth on the spacing ratchet. Of course, the Width of each space is governed by the conformation of the teeth on the spacing worm and the gears cooperating therewith. Furthermore, by governing the duration of disengagement of the upper space pawl, any intermediate number of spaces may be procured during a single rotation of the operating or main shaft. To bring the carriage to rest after tabulating or multiple-spacing, it is necessary to permit the upper space pawl to drop again into engagement with a tooth on the spacing ratchet. This latter function is effected whenever a cam element assembled to the traveling type carriage passes out of coactive relation with the adjustable members carried by the tabulator bar. Normally, the tabulator bar is biased toward the type carriage and at predetermined positions of the carriage the cam element forces or cams the tabulator bar forward or away from the carriage, against spring tension, and in so doing permits said horizontal member to be acted upon by the tabulating function lever to disengage, in turn, the upper space pawl for a period of time determined by the contour of the cam face of the adjustable member, after which period the upper space pawl again falls intor engagement with a tooth on the spacing worm ratchet to bring the carriage to rest. With the apparatus according to the present invention, a received message may be recorded in such a manner as to form automatically a record made up of a plurality cf vertical columns of equal width.

A better understanding of the invention may be had from the following description taken in conjunction with the accompanying drawings, wherein,

Fig. 1 is a partial front elevation of the printing apparatus showing the application of the tabulating mechanism thereto;

Fig. 2 is a sectional plan view of the printing apparatus corresponding to Fig. 11 in Patent No. 1,904,164, with the addition of the tabulating mechanism of the present invention;

Fig. 3 is a transverse cross-sectional view of the printer taken approximately through the vertical center line f Fig. 1;

Fig. 4 is a sectional view taken on line 4-4 of Fig. 3; and

Fig. 5 is a detail rear elevation of the spacing mechanism of the printing apparatus covered by said patent.

In the accompanying drawings, like reference characters indicate similar parts throughout. For a complete understanding of details not disclosed herein and which form no part of the present invention, reference may be had to U. S. Patent No. 1,904,164, issued April 18, 1933 to S. Morton et al.

Briefly, having reference to Figs. 1, 2, and 3, a printing apparatus to which the tabulating mechanism of the present invention is applied comprises a typing unit (shown generally in section in Fig. 3) which includes a primary selecting mechanism indicated generally as II (Fig. 2) which is of the sword-and-T type disclosed in U. S. Patent No. 1,745,633 to S. Morton et al. (fully disclosed in the rst mentioned patent), and a secondary selector or selector vane assembly indicated generally as I2. The selector vane assembly I2 controls through a series of bell cranks I3 (Fig. l), a corresponding series of curved code bars I4 carried in a movable type carriage. As set forth in the first mentioned patent, this type carriage, indicated generally as I5, is movable longitudinally with respect to a stationary platen indicated generally as I6 (Fig. 3). The type carriage I5 also carries a ribbon feed mechanism indicated generally as I1.

Referring particularly to Fig. 2, a motor I8 supplies power through gear I9 to a main operating shaft 2I which carries the spacing mechanism indicated generally as 22 and the selector cam assembly indicated generally as 23. As is known in this type of device, power is communicated from the motor to the driven shaft through a grab clutch such as 25. Portion 24 of grab clutch 25 constantly rotates with the shaft 2|, which has also frictionally connected thereto the spacing mechanism 22 and the selecting cam drum 23. Portion 24 is cooperatively engaged with the driven portion 28 when throw-out lever 21 is operated in timed relation with the reception of code signals.

The spacing mechanism 22, which will be described more in detail hereinafter, controls, through gear 28, shaft 29, gear 3|, and rack 32 (Fig. 3), the movement of type carriage I5 to form character spaces, tending in this movement to wind up the carriage return spring mechanism indicated generally as 33. Upon receipt of the carriage return signal, a function bar 34 is actuated selectively in the manner described in Patent No. 1,904,164 so as to permit spring 35 to rotate lever 35 suddenly against stop 31 to raise, through bell crank 38, portion 39 of grab clutch 4I. Carriage return mechanism 33 is thereupon permitted, due to the energy stored up therein, to return the carriage l5 to its normal or beginning-of-line position.

Positioned in operative relation with and parallel to the main operating shaft 2I is an auxiliary shaft 42 on which are carried various mechanisms, for example, printing bail 43, function lever bail 40, and the escapement mechanism for the spacing mechanism 22. The printing bail 43, which is actuated by a printing spring (not shown) in proper timed relation in the operative cycle, functions to reciprocate a pull bar operating member 44 to cause the operation of a type bar, as clearly described in the aforementioned patent.

rI'he selector vanes as set forth in Patent No. 1,904,164 control a series of function levers among which, and provided especially for accomplishing the object of the present invention, is a tabulating function lever 45 which, like the other function levers, is pivoted on a common pivot rod 45 and is assembled in a slot in the function lever comb 4l. This function lever 45, like the rest of the function levers of the series, is provided with an individual spring 48 tensioned between it and the print/er frame which tends to rotate the function lever 45 about pivot 46, but as clearly set forth in Patent No. 1,904,164, is restrained by the function lever bail 40 acting, through rod 50, on arm 50. However, in the spacing or tabulating mechanism according to the present invention, the tabulator function lever is a so-called universal function lever; that is, it is not provided with code notches or projections, so that it may be invariably operated or urged into selected position against the selector vanes upon all character combinations. The tabulator function lever is prevented from advancing toward the selector vanes, not because of a predetermined arrangement of code projections on the function lever as is the case with certain of the function levers shown in the aforementioned patent, but because of the latching engagement between the tabulator bar 92 and the upper space pawl release bar 97, as will presently be observed.

Before describing further the function of lever 45, a detailed description 0f the spacing mechanisrn will be given. Having reference tc Figs. 3 and 5 there is shown mounted on the main shaft 2l and located centrally of the apparatus a sleeve member 5I which comprises escapement ratchet 52 and spacing worm 53 which are operably connected thereto. Sleeve member 5I is operably connected to the hub of a disc 54 by means of interengaging tongue and groove members 55. Collar 55 is pinned to main shaft 2! and is rotatable therewith. Interposed between disc 54 and collar 56 is disc 57 of frictional material, for example, felt. By means of a helical compression spring 58, sleeve 5I is frictionally connected to shaft 2I through the friction clutch comprising members 54, 55, and 57. Sleeve 5I is thereby rotatable with main shaft 2l unless arrested by the escapement pawls of the spacing mechanism 22, as will presently appear.

Referring to Fig. 3, it will be noted that ratchet 52 is provided, for example, with three teeth or notches 6 I, Gla., and Sib, the escapement of which will allow the type carriage I5 to be moved forward one step or character space for each actuation of the printing bail 43. As indicated, the escapement mechanism comprises a pair of pawls or levers 62 and 63, pivotally mounted on bail shaft 42, and lever 64 adjustably fixed to printing bail 43. Spring 65 normally tends to bias levers 62 and 63 attrahently, since it is common to both levers. Lever 62 is normally urged by spring 65 in a counterclockwise direction so that laterally disposed end 66 engages tooth 6| of ratchet 52, thus arresting the rotation of said ratchet. Lever 63 is normally held out of engagement with ratchet 52 against the tensio-n of spring 65 by the action of lever 64 against laterally disposed end 61.

Lever 64 is pivotally connected to printing bail 43 at 68 and is provided at 69 witha slot and screw adjusting means, whereby the correct relative position of escapement levers 62 and 63 with respect to ratchet 52 may be determined. The spacing operation occurs immediately following or subsequent to the printing of a character in the following manner.

Upon the printing of a character, the printing bail 43 oscill-ates and in so doing, controls the operation of lever arm 64. During the initial portion of the clockwise movement of arm 64, lever 63 under the action of spring 65 also rotates clockwise to bring the laterally disposed end '|2 into the path of tooth Bla. It is noted that, due to the space indicated at 'lil between arm 64 and laterally disposed end 1| of lever 62, the latter lever has not been acted upon, and end 66 thereof remains momentarily in engagement with tooth 6|. However, upon the further clockwise movement of lever 64, similar movement is imparted, through laterally disposed end 'l I, to lever 62, thus e'ecting the disengagement of end 66 from tooth 6| and permitting ratchet 52 to rotate slightly in a clockwise direction under the iniluence of friction clutch members 54 to 5l (Fig. 5) until arrested by the engagement of tooth 6|a. with laterally disposed end 'l2 of lever 63 which lever, as was noted, was free to rotate in a clockwise direction under the tension of spring 65 into the path of oncoming tooth 6 ia. Ratchet 52 is thus restrained from rotation by lever 63 until the completion of the printing of a character at which time printing bail 43 and associated lever 64 are caused to rotate in the opposite direction by the action of a printing cam (not shown). Restraint of lever 62 by lever 64 through end is thereby removed, permitting lever 62 to rotate in a counterclockwise direction under the inuence of spring 65 into the path of tooth 6|b of ratchet 52. During this counterclockwise movement of lever 64, and after the aforementioned release of lever 62, lever 63 is caused to rotate in a like direction due to the action of lever 64 on end 61 thereof, thereby disengaging end 12 of lever 63 from tooth 6m and allowing ratchet 52 to continue its rotation until .arrested by the engagement of end 66 of lever 62 with tooth 6|b. It is observed that with the escapement mechanism just described, there is a period of overlap wherein ends 66 and 12, due to the space indicated at lll, are effective simultaneously to prevent the escapement of ratchet 52, the ends 66 .and 12 being otherwise alternately engageable to permit the escapement of ratchet 52.

It is obvious; that since worm 53 and ratchet 52 are integrally connected to sleeve 5|, said worm 53 will have normally the same intermittent or step-by-step motion as was hereinbefore seen to be imparted to ratchet 52. Worm 53 is meshed with worm gear 28 (Figs. 2 and 3) which is loosely mounted on vertical shaft 29, and is operably connected thereto by means of jaw clutch 4| (Fig. 3). Worm 53 and gear 28 are so related, according to the present embodiment, that one-third revolution of worm 53 will rotate gear 28 through a distance which, through gear 3| and rack 32, causes the type carriage to be stepped forward one character space.

From the foregoing it will be observed that character spacing occurs automatically with the printing of each character; that is, the spacing function is merged into the printing operation. It is well known that there is a code combination .allotted to each type bar; but it is possible, however, to employ a code combination, commonly known as. the spacing signal, which is identified with no type bar but which will nevertheless initiate the printing operation. Therefore the spacing between words is accomplished in exactly the same manner as set forth when a spacing signal is received, except that no type bar is operated and consequently noy character is printed.

In accordance with the present invention, multiple spacing may be effected automatically under predetermined operating conditions. The mechanically operated tabulating arrangement of the present embodiment comprises a tabulator bar 6| extending across the front of the printing apparatus, as shown in Fig. l, which is provided with depending portions 82 and 63 through which bar 8| is pivotally mounted on bracket 64 carried in the printer frame. Thus tabulator bar 8| is adapted to be swingable toward and away from the type carriage l5. Bar 8| is .also provided with a longitudinal slot 85 extending substantially the entire length of the bar. In this slot are carried adjustably movable members 86 which are adapted to be clamped to the bar 8i by means of screw 81 and clamps 88 individual to* each member 86 (Fig. 3). As indicated in Fig. 2, these members 86 are each provided with an inclined or cam portion 89, conformed to provide a quick action upon cooperation with a cam element carried by the type carriage, to effect the multiple spacing operation. In the embodiment shown, the bar 8| is biased normally toward the element lll (and hence, the type carriage l5) by a spring 95 (Fig. 2) so that members 86 are normally presented in the path of element whereby at predetermined points, governed by the arrangement of members 86, element will cam a member 86 rightwardly, as viewed in Fig. 3, to impart clockwise movement to bar 8| about pivots 86 and 99.

Tabulator bar 8| is also provided, intermediate the depending portions 82 and 63 (Fig. l) and suitably positioned relative to function lever 45, with another depending portion 9|. Attached to and depending from portion 9| is a bar 92 the lower end of which is provided with an aperture 93 having its left-hand edge (as viewed in Fig. 3) conformed so as to provide a shoulder 94.

Cooperating with the stepped portion or shoulder 94 is one arm 96 of a lever 91 pivotally carried at 68 on a support 99 secured to the function lever comb 4?. The extremity of arm 66 is provided with a laterally disposed portion |0| as shown in Fig. 4 which coacts with the shoulder 94. At the end of arm |62 of lever 91 is carried a vertically extending member |93 the upper end of which is provided (in the present embodiment) with an open-ended slot adapted to engage a pin |04 carried by escapement lever 62.

Function lever 45 is provided with a horizontal portion |05 so conformed that its extremity |06 engages the lower edge of arm |02 of lever 91 such that whenever function lever 45 is permitted to rotate in a clockwise direction under the action of its spring 43 upon the substantially simultaneous actuation of function lever bail 40 and tabulator bar 8|, the end |05 thereof is elevated, causing lever 91 to rotate slightly in a clockwise direction against the tension of its spring |08. In other words, whenever element i coacts with a member 86 to rotate the tabulator bar 8| in a clockwise direction (as viewed in Fig. 3), the shoulder 94 will be swung clear of lateral projection Il and upon the oscillation concurrently therewith of function lever bail 40 (with printing bail 43), the function lever 45 Will be permitted to respond to the pull of spring 48 to be rotated in a clockwise direction, in which event the end |05 of arm 05 will be enabled to rotate lever 01 clockwise. This movement of lever 91 is in a direction to lift end 66 of lever 62 out of engagement with tooth 6| of ratchet 52, arm |03 and pin |04 serving as the instrumentalities through which such lifting may be effected. However, since the movement of lever 91 is eifected by function lever 45 which is controlled by function bail 40, if bail 40 is secured to printing bail 43 and is operable therewith, as described in Patent 1,904,154, lever 52 may be rocked clockwise by arm 54 secured to printing bail 43 at about the same time that function lever 45 is permitted to operate, so that arm |53 may not actually lift pin |04 of lever 62 but may merely follow it upwardly.

The function of lever 91 and link |03 is to hold lever 62 in extreme clockwise position with its end 56 out of the path of the teeth of ratchet 52 after function lever S5 has been restored to normal position by bail fifi, in order that -extra spacing may be accompiished. For this purpose there is provided a secondary latch l2! (Fig. 3) pivoted at |22 to depending arm 92, the function of which is to cooperate with cam portions 89 to prolong the action of the spacing mechanism to produce multiple spacing. Thus when the tabulatorbar8| is rotated clockwise (Fig. 3) due to the camming action element on member B6, the latch |2| will be advanced toward end I0| of lever91,thelatter causing latch |2| to rotate slightly in a` counterclockwise direction against the action of its spring |23. Then when lever 91 is rotated clockwise by function lever 45 upon the clockwise movement of bail 40, the end |0| slips ofi of latch lil, which then responds to the pull of its spring |23 to overlie end |0|, thus preventing tlie return of lever 91 in a counterclockwise direction under the action of its spring |08 until element i Ii has passed member 86. 1n the meantime, however, printing bail 43 (and hence function bail 40) has returned to its counterclockwise position, thus returning function lever 45 also to its counterclccliwise position to remove the restraint of portion |06 from lever 91. If it were not for latch |2| lever 91 would be returned to its counterclockwise position prematurely and consequently multiple spacing would not be achieved. Accordingly, due to latch |2| escapement pawl or lever 62 remains disengaged from ratchet 52 until element lil passes a member 86, at which time tabulator bar 8| responds to the pull of its spring 95 and returns to its counterclockwise position, thus removing latch l2! from end |0|, whereupon lever 91 is free to respond to the pull of its spring |08 to return to its counterclockwise position shown in Fig. 3. Clockwise movement of latch |2| is limited by a pin or stud |24.

The duration of the disengagement of end 66 of lever 62 from ratchet 52 is governed by the contour of cam portion 89 which is so conformed as to delay the counterclockwise rotation of lever 91 sufliciently to permit the desired amount of rotation of ratchet 52. For example, if the cam portion is so conformed as to permit ratchet 52 to make a complete revolution, the carriage i5 will be stepped or spaced a number of spaces equivalent to the number of teeth on the spacing ratchet, in the time interval allotted to the reception of a single code combination. The practical limit upon the amount of free rotation that may be permitted to ratchet 52 is determined by the interval of time which must be allotted to the printing operation. It is desirable, in order to obtain clear character impressions, that the carriage I5 shall not be in motion at the time of impact between the type bars and the platen i6. It is also desirable, in order to obtain smooth operation of the printing mechanism, that the time interval allotted to the printing operation shall not be so brief as to require a very sudden printing blow. The satisfaction of these conditions establishes a certain interval, in the cycle beginning as a signal combination starts to be received, and ending as the next signal combination starts to be received, during which spacing of the carf riage I5 may not be permitted, but during all of the remainder of the cycle it may be permitted. It Will be apparent, since shaft 2l rotates continuously, that it may impart rotation to ratchet 52 even during any portion of a cycle in which the function cams are held stationary due to arrestment of portion 26 of grab clutch 25 by throw-out lever 21.

From the foregoing it Will be apparent that the permissible amount of free rotation of ratchet 52 is dependent almost entirely upon the timing of the printing operation, and that cam portions 89 shall be so conformed as to prevent excessive extra spacing. The cam portions 89 may, if desired, be conformed to limit the extra spacing to less than the maximum permissible amount. Thus, if ratchet 52 is permitted less than a revolution, the spacing of carriage |5 will be correspondingly less or equivalent in number of spaces to the number of teeth which are permitted to escape laterally disposed portion 66 of lever 52'. Furthermore, since the carriage 5 moves, upon a single revolution of ratchet 52, a number of spaces equal to the number of teeth of the ratchet 52, it will be apparent that if the ratio between gears 2S and 53 is changed so that gear 28 is rotated through a greater angular distance per revolution of gear 53, and if the number of teeth on ratchet 52 is correspondingly increased, the carriage |5 will be moved a proportionally greater number of unit spaces per revolution of ratchet 52. However, according to the preferred einbodiment of the invention, the cam portion 89 is so conformed as to cause the extra spacing opwhich is comparable to bar 53 Ashown in Fig. 1 of Patent 1,994,164 employed for retaining the bell crank levers I3 in operable relation to vanes IQ'I. Cam il! normally tends to rotate in a clockwise direction (as viewed in Fig. 2) about pivot H2 due to the action of spring H6, but its clockwise rotation is limited by the coaction of a stop pin Ill, carried thereon, with the end of bar H5. Thus, upon the rightvvard movement of type carriage I5, cam l l i, due to its non-rotatability further in a clockwise direction, Will, by its camming action on member B5, actuate tabulator bar t! outwardly; but upon the left- Ward movement of type carriage l5, cam II! upon striking the series of members will be rotated counterclockwise against the action of spring illu suiiciently to escape the cam portion 89.

In the event that it is desired to use the printer disclosedin the drawings, in the normal manner, that is without the automatic multiple spacing feature according to the present invention, a cut-out means is provided for disabling the lever ill. The cut-out means, Figs. 3 and 4, comprises a cut-out lever I3! pivoted at I32 to the printer frame. Lever I3! is pivctally connected to portion H33 of an armature lever I34 associated with electromagnet It mounted on the printer frame. When the magnet I 35 is deenergized, the armature ist will respond to the pull of its spring I3@ (Fig. 4) to bring the end ISI of lever I3! underneath. arm E35 of lever 9i', thus preventing the clockwise rotation of lever @l by function lever i5 irrespective of the position of arm S2. The magnet I35 may be included in a local circuit controlled by a manually operable switch, so that when the circuit is closed the magnet It will be energized and cut-out lever I3! will be withdrawn out of blocking engagement with lever 91, and when the circuit is opened the portion I3? of lever I3! will be presented beneath arm 96 of lever 9'! to prevent operation of the multiple-spacing mechanism.

Obviously, changes may be made in the details set forth without departing from the essentials of the invention or from the spirit and scope of the invention as defined in the following claims.

What is claimed is: l

1. In a recorder, a carriage movable to form character spaces, means to perform functions other than recording, a permutation device movable with said carriage to determine the character to be recorded, a stationary permutation device to control said means and said permutation device, and automatic means cooperative with said means for releasing said carriage at predetermined points for advancement through a plurality of spaces at a time independently of the operation of said stationary permutation device.

2. In a telegraph printer, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one character space, permutation code mechanism to control operations other than recording comprising a plurality of function code levers, and automatic means cooperative with a certain one of said levers to control predetermined points the advancement of said carriage through a plurality of spaces at a time independently of the transmission of signals.

3. In a telegraph recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one character spacev upon each operation thereof, said spacing mechanism including a spacing ratchet, a pair of pawls and a single spring means to render said pair of pawls coactive with said ratchet in escapement manner, permutation code mechanism to control operations other than recording comprising a plurality of function code levers, and means cooperative with a certain one of said levers at predetermined periods to effect the disengagement of one of said pair of pawls to release said carriage for advancement through a plurality of spaces.

4. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one character space upon each operation thereof, said mechanism embodying an escapement device including a pair of pawls and means to bias said pawls attrahently, and cam initiated means eective automatically under certain operating conditions to disable one of said pair of pawls to release said carriage for advancement continuously through a plurality of spaces at a time.

5. In a telegraph recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one character space upon each operation thereof, said mechanism embodying an escapement device including a pair of pawls and means to bias said pawls attrahent- 1y, permutation code mechanism to control operations other than recording comprising a plurality of function code levers, and cam initiated means effective automatically in cooperation with a certain one of said levers to disable one of said pair of pawls to release said carriage for advancement continuously through a plurality of spaces at a time.

6. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement oi said carriage one character space upon each operation thereof, said mechanism comprising an escapement device including a spacing ratchet, a pair of pawls and means to bias said pawls attrahently, and means effective under certain operating conditions to insure the engagement of one of said pawls with said spacing ratchet prior to the disengagement of the other of said pawls therefrom.

7. In a telegraph recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one character space upon each operation thereof, said mechanism embodying an escapement device including a pair of pawls and means to bias said pawls attrahently, permutation code mechanism to control operations other than recording comprising a' plurality of function code levers, and means comprising a pivotally mounted plate, a plurality of members adapted to be positioned at any one of a plurality of points along said plate, a projection on said carriage cooperable with said positioned members, coactive with an extension on one of said code levers, said tabulating mechanism operative in response to the selective operation of said extension carrying code lever to disable periodically one of said pair of pawls to release said carriage for advancement continuously through a plurality of spaces at a time.

8. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one character space, means responsive to signal impulses for effecting printing and operating said spacing mechanism, and means whereby said spacing mechanism is operated at a predetermined point in the travel of said carriage irrespective of the operation of said signal responsive means.

9. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one character space, means responsive to signal impulses for effecting printing and operating said spacing mechanism, and means whereby said spacing mechanism is operated at a predetermined point in the travel of said carriage irrespective of the operation of said signal responsive means to advance said carriage an additional character space during a code signal interval.

10. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one character space, means responsive to signal impulses for effecting printing and operating said spacing mechanism, and means whereby said spacing mechanism is operated under certain operating conditions irrespective of signal impulses to advance said carriage a predetermined additional amount.

11. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one character space, means responsive to signal impulses for effecting printing and operating said spacing mechanism, means whereby said spacing mechanism is operated under certain operating conditions irrespective of signal impulses to advance said carriage a predetermined additional amount, and means for disabling the action of said last recited means.

12. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one character space, means responsive to signal impulses for effecting printing and operating said spacing mechanism, means whereby said spacing mechanism is operated under certain operating conditions irrespective of signal impulses to advance said carriage a predetermined additional amount, and electromagnetic means for rendering said last mentioned means non-responsive when said carriage reaches said predetermined point.

13. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor to control the advancement of said carriage including means to limit the spacing operation to a single character space at a time, means responsive to signal impulses for effecting printing and operating said spacing mechanism, and means whereby said spacing mechanism is effective irrespective of signal impulses when said carriage is at a predetermined point to render said limiting means ineffectual.

14. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one space, means responsive to signal impulses for effecting printing and operating said spacing mechanism, and means whereby said spacing mechanism is operated under predetermined conditions of said carriage for causing automatically the advancement of said carriage additional to the spacing effected through the operation of said signal responsive means.

l5. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one space, means responsive to signal impulses for effecting printing and operating said spacing mechanism, and cam actuated means whereby said spacing mechanism is rendered operative when said carriage is in a predetermined position for continuing the advancement of said carriage for the period of an additional character space.

16. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage one space, means responsive to signal impulses for effecting printing and operating said spacing mechanism, cam actuated means whereby said spacing mechanism is rendered operative when said carriage is in a predetermined pcsition for continuing the advancement of said carriage for the period of an additional character space, and means for rendering said cam actuated means ineffectual on said spacing mechanism.

.1.7. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage including means to limit the spacing to a single character space upon each operation thereof, means responsive to signal impulses for effecting printing and operating said spacing mechanism, cam actuated means, and means effective through the instrumentality of said cam actuated means for rendering said space limiting means ineffectual whereby an additional space is inserted upon the operation of the cam actuated means.

18. In a recorder, a carriage movable to form character spaces, spacing mechanism therefor normally adapted to control the advancement of said carriage including means to limit the spacing to a single character space upon each operation therecf, means responsive to signal impulses for effecting printing and operating said spacing mechanism, cam actuated means for rendering said space limiting means ineffectual, and means whereby said spacing mechanism is effective in accordance with the period of operation of said cam actuated means for operating said carriage to insert additional spaces automatically.

19. In a recorder, a carriage movable to form character spaces, a spacing mechanism for controlling the movement of said carriage, means responsive to signal impulses for effecting printing and operating the spacing mechanism to space the carriage one character space, and means whereby said spacing mechanism is operated when said carriage is at a predetermined point in its travel for causing said carriage to advance an additional space irrespective of the signal responsive means.

20. In a recorder, a carriage movable to form character spaces, a spacing mechanism for controlling the movement of said carriage, means responsive to signal impulses for effecting printing and operating the spacing mechanism to space the carriage one character space, and means including a member operated when the carriage is in a predetermined position and an element actuated by said member for acting on said spacing mechanism for effecting the operation thereof for a period determined by the operation of said member.

2l. In a recorder, a carriage movable to form character spaces, a spacing mechanism for controlling the movement of said carriage, means responsive to signal impulses for eiTectin-g printing and operating the spacing mechanism to space the carri-age one character space, means including a member operated when the carriage is in a predetermined position, an element actuated by said member for acting on said spacing mechanism to prolong the spacing operation, and a latch for holding said element in its actuated position until said member is restored to its normal position.

22. In a recorder, a carriage movable to form character spaces, a spacing mechanism for. controlling the movement of said carriage, means responsive to signal impulses for eiecting printing and operating the spacing mechanism to space the carriage one character space, means including a member operated When the carriage is in a predetermined position, an element actuated by said member for acting on said spacing mechanism to prolong the spacing operation, a latch for holding said element in its actuated position until said member is restored to its normal position, and means acting on said element for rendering it nonresponsive to the action of said member.

CHARLES W. BURCKY. 

